Method of forming reinforced fiber packages.



A n.13'. HERR.y I METHOD 0F FORMING REINFORCED FIBER PACKAGES.v 1,187,063.

Patefed une 13 Aao UNITED sTATEs PATENT oEEicE.

HENRY C. HERR, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGN- MENTS, T0 SOUTH SIDE TRUST COMPANY, TRUSTEE, OF PITTSBURGH, PENNSYL- VANIA, A CORPORATION OF PENNSYLVANIA.

METHOD 0F FORMING REINFORCED FIBER PACKAGES.

Specicaton of Letters Patent.

Patented J une 13, 1916.

Application led October 21, 1913. Serial N o. 796,447.

citizen of the United States of America, re-

siding at Pittsburgh, in the county of| Allegheny and State of Pennsylvanla, have 1nvented certain new.v and useful Improvemerits vin Methods of. Forming Fiber Packages, of which the following 'is' a specification, reference being had therein to the accompanying drawings. p

The invention relates to the manufacture of packages from paper or fiber stock and vhas more particular reference to the method of reinforcing the package to impart thereto a greater strength.

In the drawings: Figure l is a longitudi nal section through a machine which may be used for carrying out my improved method of reinforcement; Fig. 2 is a similar view, showing a stage in the operation; Fig. 3 is a section through the completed package; Fig. 4 is an enlarged section of a portion of Fig. 3; and Fig. 5 is a plan'view.

In the present state of the art, containers or packages have been formed by winding a plurality of plies of paper or fiber stock upon a mandrel and cementing these phes together to form a cylindrical body. Heads are then placed in the opposite ends of the body and are secured by suitable means such as nails. The greatest defect in such containers or packages is the lack of strength to resist. a local stress. -I have therefore devised a method of reinforcing the package as follows The paper or fiber stock A is fed to a winding-drum or mandrel B provided with suitable grippers C for holding the forward edge of the stock.

The mandrel is then revolved to place at.

least one complete convolution of the paper or fiber stock thereon, as indicated in Fig. 2. A metallic reinforcement, preferably a flat sheet of expanded metal, D is then woundin intermediate the ply or plies of paper stock already upon the drum and an outer ply which is wound thereon. During the winding-in of this reinforcement a suitable adhesive material-such as silicate of sodais applied to coat both sides of the metallic reinforcement and the contacting faces-of the paper stock, as well as to fill the interstices formed by the openings in the expanded metal. I preferably wind-in this reinforcement by feeding same from the opposite side of the drum B from that which the paper stock is fed from, and then pass the metal through a curved guide E, which gives form thereto, and delivers the forward edge tangentially into the throat F between the drum and the paper stock being wound thereon. I also preferably apply the adhesive material by a roll G which is brought in contact with the lower surface of the paper strip A, while a second roll H is placed between the drum B and guide E andl coats the under face of the reinforcement D. The winding is continued until the reinforcement forms one complete 'revolution and preferably slightly more than a revolution so as to form an overlap. rl`he paper stock is also formed of a length such that the inner convolution overlaps the inner end of the reinforcement, while the outer convolution overlaps the outer end of said reinforcement. The several plies are pressed in firm Contact with each other by a presserbar I, which extends across the drum at the point of engagement of the paper and metallic sheets therewith.

The method, as above described, of reinforcing the paper body is one Vwhich may be easily carried out, while the product obtained is of very much greater strength.

What I claim as my invention is:

1. The method of forming reinforced tubular fiber bodies, which consists in spirally winding a sheet of fiber stock, in bending a flat sheet of expanded-'metal reinforcement to curve the same and then winding it between plies of vfiber stock, and in applying a cementitious material between the plies filling the interstices of the reinforcement.

2. The method of forming tubular reinforced fiber bodies, which consists in 'spirally winding a sheet ofy the fiber stock, in applying a cementitious material to one side of said stock, in winding in between plies of said stock a reinforcement, and in applying a. cementitious material to one side of said reinforcement.

3. The method of forming tubular reinforced fiber bodies, which consists in spirally winding a sheet of fiber stock, in applying a cementitious material to an openmesh reinforcement and substantially filling theinterstices thereof, and in windingin between plies of the fiber stock said reinforcement.

4. The method of forming tubular reinforced fiber bodies, which consists in' spirally winding a sheet of fiber stock, in winding in between plies thereof a reinforclment, in applying a cementitious material between the plies, and in pressing said plies and reinforcement in firm contact with each other at the point of engagement thereof.

'5. The method of forming reinforced tubular fiber bodies, which consists in spi-` rally winding a sheet of fiber stock, in bend* ing a flat sheet of reinforcement to curve the same, in directing said reinforcement tangentially into engagement with said liberV stock and winding it between the plies thereof, and in applying a cementitious material to said reinforcement.

In testimony whereof I affix my signature in presence of two witnesses.

' HENRY C. HERR. itnessesz C. C. MORRISON, E. F. RiTnNoUiz. 

